<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body></body>
</html>

<script>
  function computed(a, b, c) {
    if (c === "+") {
      console.log(a + b);
    }

    if (c === "-") {
      console.log(a - b);
    }

    if (c === "*") {
      console.log(a * b);
    }

    if (c === "/") {
      console.log(a / b);
    }
  }

  computed(1, 2, "+");
</script>
